<?php

if (!defined('BASEPATH'))
  exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */
// ------------------------------------------------------------------------

/**
 * Language Class
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Language
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/libraries/language.html
 */
class CI_Lang {

  /**
   * List of translations
   *
   * @var array
   */
  var $language = array();

  /**
   * List of loaded language files
   *
   * @var array
   */
  var $is_loaded = array();

  /**
   * Constructor
   *
   * @access	public
   */
  function __construct() {
    log_message('debug', "Language Class Initialized");
  }

  // --------------------------------------------------------------------

  /**
   * Load a language file
   *
   * @access	public
   * @param	mixed	the name of the language file to be loaded. Can be an array
   * @param	string	the language (english, etc.)
   * @param	bool	return loaded array of translations
   * @param 	bool	add suffix to $langfile
   * @param 	string	alternative path to look for language file
   * @return	mixed
   */
  function load($langfile = '', $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '') {
    $langfile = str_replace('.php', '', $langfile);

    if ($add_suffix == TRUE) {
      $langfile = str_replace('_lang.', '', $langfile) . '_lang';
    }

    $langfile .= '.php';

    if (in_array($langfile, $this->is_loaded, TRUE)) {
      return;
    }

    $config = & get_config();

    if ($idiom == '') {
      $deft_lang = (!isset($config['language'])) ? 'english' : $config['language'];
      $idiom = ($deft_lang == '') ? 'english' : $deft_lang;
    }

    // Determine where the language file is and load it
    if ($alt_path != '' && file_exists($alt_path . 'language/' . $idiom . '/' . $langfile)) {
      include($alt_path . 'language/' . $idiom . '/' . $langfile);
    } else {
      $found = FALSE;

      foreach (get_instance()->load->get_package_paths(TRUE) as $package_path) {
        if (file_exists($package_path . 'language/' . $idiom . '/' . $langfile)) {
          include($package_path . 'language/' . $idiom . '/' . $langfile);
          $found = TRUE;
          break;
        }
      }

      if ($found !== TRUE) {
        show_error('Unable to load the requested language file: language/' . $idiom . '/' . $langfile);
      }
    }


    if (!isset($lang)) {
      log_message('error', 'Language file contains no data: language/' . $idiom . '/' . $langfile);
      return;
    }

    if ($return == TRUE) {
      return $lang;
    }

    $this->is_loaded[] = $langfile;
    $this->language = array_merge($this->language, $lang);
    unset($lang);

    log_message('debug', 'Language file loaded: language/' . $idiom . '/' . $langfile);
    return TRUE;
  }

  // --------------------------------------------------------------------

  /**
   * Fetch a single line of text from the language array
   *
   * @access	public
   * @param	string	$line	the language line
   * @return	string
   */
  function line($line = '') {
    $value = ($line == '' OR !isset($this->language[$line])) ? FALSE : $this->language[$line];

    // Because killer robots like unicorns!
    if ($value === FALSE) {
      log_message('error', 'Could not find the language line "' . $line . '"');
    }

    return $value;
  }

}

// END Language Class

/* End of file Lang.php */
/* Location: ./system/core/Lang.php */
